Pruning houseplant roots may sound like an unfamiliar thing to do, but it can have serious benefits. There are two key times you may need to do this: when plants have developed congested roots, and when they are suffering from root rot.
With old or fast-growing indoor plants, the roots can grow so much that they actually take up all of the space in their container, explains Diane Kuthy, the founder of How To Grow Everything. ‘This is called being "root bound" and it's a serious condition that can cause stunted growth and, eventually, the death of the plant.’
